Like other insects that sequester toxins in their bodies, this milkweed bug (Oncopeltus faciatus) displays bright red/orange contrasting with black that advertises its foul flavor to would-be predators who, the theory goes, avoid eating the gaudy bugs. In this setting the bug's patterned coloration has also camouflaged it pretty well against the same-colored milkweed flower buds. Last fall, I saw one of these bugs on one of the 10 or so milkweed plants. Today, there were three bugs, all on the same north-most plant in the parkway. If (when) the little bugs arrive, I shall hopefully observe the rate at which the next generation migrates in a miniature way, across the 50 foot span of my parkway (which would be south) or away altogether (which would be any other direction).
Search This Blog
Sunday, April 20, 2008
Aposematic Crypticism
Like other insects that sequester toxins in their bodies, this milkweed bug (Oncopeltus faciatus) displays bright red/orange contrasting with black that advertises its foul flavor to would-be predators who, the theory goes, avoid eating the gaudy bugs. In this setting the bug's patterned coloration has also camouflaged it pretty well against the same-colored milkweed flower buds. Last fall, I saw one of these bugs on one of the 10 or so milkweed plants. Today, there were three bugs, all on the same north-most plant in the parkway. If (when) the little bugs arrive, I shall hopefully observe the rate at which the next generation migrates in a miniature way, across the 50 foot span of my parkway (which would be south) or away altogether (which would be any other direction).
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment